Hello Max, i tried (and have) installed Jboss 4.2GA Installed Eclipse3.3 and JBossTools. Choosing a server from 'JBoss a division of Red Hat' and named it 'jboss server'. And getting the described erroneus behaviour. So i added a new server (with the same runtime) from JBoss, which is named by default as 'JBOSS 4.2'. The 'JBOSS 4.2' server started. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059861#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...